Home Postcode finder QLD White Mountain White Mountain postcode QLD White Mountain is a locality in Queensland covered by postcode 4352. Postcode 4352 State or territory Queensland (QLD) Region Toowoomba Region Add a free White Mountain business listing Be the first listing in White Mountain Common questionsWhat is the postcode for White Mountain?White Mountain, QLD has the postcode 4352.What state is White Mountain in?White Mountain is in Queensland (QLD).Does postcode 4352 cover more than one suburb?Yes. Postcode 4352 covers 71 localities, so the postcode alone does not identify White Mountain. Browse other postcodes in Queensland, or widen the search to every Australian postcode.